Embrasure shutter for airplane combat hoods



Jm11,1944. Y J. "UNKE Em 38,950

'EMBRASURE SHUTTER/FOR AIRPLANE COMBAT HOODS Filed March 10, 1941 ing steel. The band is reinforced by strips or Patented Jan. 11, 1944 t 2,338,950

EMBRASURE SHUTTER FOR AIRPLANE COMBAT HOODS Johannes Linke, Berlin-Tegel, and Arnold Schneider, Dusseldorf, Germany; vested in the Alien Property Custodian Application March 10, 1941, Serial No. 382,632 In Germany June 18, 1937 1 Claim. (01. 89-36) UNlTg It has become usual to equip airplane combat v Fig. 1 shows a combat place carried out acplaces with fairings or protective shields, in .orcording to the invention and in partial Vertical der to protect the glmner and his firearm against section, the Wind and weather. A slit in the hood serves Fig. 2 is a section on line II-II of Fig. l. for the movement of the firearm in vertical di- 5 The firearm a which can be aimed in vertical fit/ W eas t hood as a whole can foldirection about the trunnion axis (11 carries on low the aiming movements in lateral direction. its cylindrical exterior a sleeve (12. This sleeve o p t w n or w f penetrathas at the right and at the left a pin as and (14.

ing hr h the slit, it has already n p p The steel band b forming the embrasure shutter to cover the slit with roller blinds or fabric gores is bl connected with'the two pins as and at with sliding clasp fasteners as a shutter so that by Supports b d b Th steel band I) is only an opening remains free for passing through pressed by rouers c3, c4 d 05 i t th the firearm. Embrasure shutters of endless guides c and 01 hi h form fram parts of the bands, composed of a sheet metaland"Ce l covering. In this manner the steel band b can ben ater a e a r ady o Such endless follow the movements of the firearm, the sleeve (12 a s a be e p y n for embrasure shutbeing adapted to shift longitudinally on the exters of ball or circular shape and cannot be used terior of the firearm according to the distance of on the usual combat places as they require the guides c and 01 from the trunnion axis in.

traordinarily much space. Amongst the rol e The sleeve at can further slightly adjust itself blind embrasure shutters a prop has b relative to the steel band I), in order upon aiming made accordmg to Whmh the embrasure Shutters in vertical direction to be able to follow the difconsists of a flexible band of several movable ferent curvature of the guides c and 01 0f the metal elements which are guided singly by roll embrasure opening which do not extend circular f g f in g z i fii such relative to the trunnion m. with this object in Im an S cannot e is ac as ey are view a slight clearance C7 and C8 is provided above P to i at gg flsgng i??? P? in t and below sleeve 112, these clearances admitting Instance t ey W0 Ten er d1 6 t 01 lmpcssl of inclined positions of sleeve on as tippingmoveble any movement of the firearm for aiming in ments about the pins as and a4 The opening is vertical direction. They further do not protect h m owever, completely covered by the steel band 1) against the penetratlon of dust and dirt owing to in Whatever height position of the firearm so their leaky covering and require great forces for c that the steel band can either further move adgustment owlng to the windin up of the roller Stretched in a guide extending beyond the band, especially when the same is frozen. brasure opening or roll up and down in front of The invention proposes in order to avoid such i or behind the opening in a manner known from inconveniences to use as embrasure shutter a roller blinds. For reinforcing the metal band 12 f 1 -r tfiexlble metal band made me erably of non us reinforcing strips be can further be provided on indentations and guided at its outer side directly the inner Side of f metal band by Welding or by on guide Shoulders fixed on the embrasure opem other means WhlCh extend transversely 1n the mg and on its inner side by renew The band 40 longitudinal direction of the shutter band b, in

is of such length. that it still covers the slit Order not to impair theedaptetion 9 the curved when the fir rm is in its highest and lowest shape of the covermg guide shoulders n theopenposition. It is stifiened on the inner side by remg c, 01 when t metal bafld 1S d n the inforclng strips extending. transversely to .the enflbrasure p Therelnforcmg of band I) longitudinal direction of the shutter-band, in ormlgght also be efieqed y dentatwns Whlch are der to admit of an unimpeded adaptation to the chlefiy r n d in the transverse direction of curvature of the covering of the stand when the the band b and l/e d Over the Whole width band is shifted in the embrasure opening and in Of the band @1089 p t0 the guide ed es- A despite of the high wind pressure. Th band comsirable reinforcing in the direction of shifting of prises an pening thrgugh which the firearm 1 .the metal band ought to be limited to the midpasses the barrel of which is guided in a sleeve dle section of the shutter b and the individual hingedly connected with the opening. indentations must be kept so short that the easy An embrasure shutter according to the invenadaptation of the metal band b to the curved tion is illustrated by way of example in the ac- Shape of the embrasure opening is not impaired companying drawing, in which thereby.

We claim: Embrasure shutter for covering embrasure openings in the hood of airplane combat places comprising a flexible band shiftably guided in accordance with the aiming movement of a firearm in vertical direction, a sleeve adapted to be movably mounted on a. barrel of the firearm, said band, being metallic, continuous, reinforced and movable along with the barrel by said sleeve, guide shoulders in'the opening of the embrasure adapted to directly guide said metal band on its outer side, and rollers adapted to guide said 5 metal band on its inner side.

JOHANNES LINKE. ARNOLD SCHNEIDER. 

